Android和OpenCV新手。一直试图从新书中实现代码,使用实用计算机视觉项目掌握OpenCV 。该应用程序基本上使用OpenCV在相机预览上呈现卡通化图像。您可以触摸屏幕以保存卡通图像。
作者的源代码位于here。
我对CartoonifierApp.java文件进行了一些小修改(见下文),以便我可以使用OpenCV Manager应用程序静态加载漫画器库(原始代码抛出了UnsatisfiedLinkError)。
我面临的问题是,当我将应用加载到我的Galaxy Nexus(Android 4.1.1)上时,我会看到一个空的黑屏。我的LogCat说:
E / BufferQueue(4744):[unnamed-4744-0] setBufferCount:SurfaceTexture 已经被遗弃了! E / Cartoonifier :: SurfaceView(4744): startPreview()失败
我认为这是一个记忆问题。我知道cpp代码可以工作,因为它在我的计算机上运行良好 - 虽然在相对较新的笔记本电脑(华硕U46E)上渲染很慢。
我不知道如何解决这个问题。我找到的唯一有用的建议是here。如果我在CatoonifierVewBase.java中替换我的setPreview方法
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
mCamera.setPreviewTexture( new SurfaceTexture(10) );
else
mCamera.setPreviewDisplay(null);
与
mCamera.setPreviewDisplay(mHolder);
然后会发生什么事情,相机正常工作,我可以通过触摸屏幕保存卡通图像。请注意,这并不是理想的结果,因为我想在相机预览上不断地对图像进行漫画。相机只是工作,因为我没有写到表面视图(至少这是我的理解)。前面提到的site中的答案有一些解决方法,但我不知道他在说什么。
BTW我已经尝试了所有OpenCV4Android示例应用程序,它们工作得很好。我也使用OpenCV 2.4.3版。 API级别目标是15.
完整Logcat:
12-22 15:33:07.966:I / CartoonifierApp(5999):实例化的新课程 com.Cartoonifier.CartoonifierApp 12-22 15:33:07.966: I / CartoonifierApp(5999):调用onCreate 12-22 15:33:07.966: I / CartoonifierApp(5999):尝试加载OpenCV库12-22 15:33:07.982:I / Cartoonifier :: SurfaceView(5999):实例化新的 class com.Cartoonifier.CartoonifierView 12-22 15:33:07.990: I / CartoonifierApp(5999):onResume 12-22 15:33:07.990: I / Cartoonifier :: SurfaceView(5999):openCamera 12-22 15:33:07.990: I / Cartoonifier :: SurfaceView(5999):releaseCamera 12-22 15:33:08.099: D / OpenCVManager / Helper(5999):创建服务连接12-22 15:33:08.099:D / OpenCVManager / Helper(5999):尝试获取库路径 12-22 15:33:08.138:D / OpenCVManager / Helper(5999):试着搞定 库清单12-22 15:33:08.169:D / OpenCVManager / Helper(5999):库 清单:"" 12-22 15:33:08.169:D / OpenCVManager / Helper(5999):首先 尝试加载库12-22 15:33:08.169:D / OpenCVManager / Helper(5999): 尝试初始化OpenCV库12-22 15:33:08.169: D / OpenCVManager / Helper(5999):尝试加载库 /data/data/org.opencv.engine/lib/libopencv_java.so 12-22 15:33:08.169:
D / dalvikvm(5999):尝试加载lib /data/data/org.opencv.engine/lib/libopencv_java.so 0x41936a40 12-22
15:33:08.193:D / dalvikvm(5999):添加了共享库 /data/data/org.opencv.engine/lib/libopencv_java.so 0x41936a40 12-22
15:33:08.193:D / OpenCVManager / Helper(5999):OpenCV libs init没问题!
12-22 15:33:08.193:D / OpenCVManager / Helper(5999):首次尝试 加载库是好的12-22 15:33:08.193:D / OpenCVManager / Helper(5999):Init 完成状态0 12-22 15:33:08.193: D / OpenCVManager / Helper(5999):解除服务12-22 15:33:08.200: D / OpenCVManager / Helper(5999):使用回调12-22进行呼叫 15:33:08.200:I / CartoonifierApp(5999):OpenCV已成功加载
12-22 15:33:08.200:D / dalvikvm(5999):尝试加载lib /data/data/com.Cartoonifier/lib/libcartoonifier.so 0x41936a40 12-22
15:33:08.200:D / dalvikvm(5999):添加了共享库 /data/data/com.Cartoonifier/lib/libcartoonifier.so 0x41936a40 12-22
15:33:08.200:D / dalvikvm(5999):没有找到JNI_OnLoad /data/data/com.Cartoonifier/lib/libcartoonifier.so 0x41936a40, 跳过init 12-22 15:33:08.200:D / OpenCVManager / Helper(5999): 服务连接创建12-22 15:33:08.200: D / OpenCVManager / Helper(5999):尝试获取库路径12-22
15:33:08.232:D / OpenCVManager / Helper(5999):试图获取库列表 12-22 15:33:08.271:D / OpenCVManager / Helper(5999):图书馆清单:""
12-22 15:33:08.271:D / OpenCVManager / Helper(5999):首次尝试 load libs 12-22 15:33:08.271:D / OpenCVManager / Helper(5999):试图
init OpenCV libs 12-22 15:33:08.271:D / OpenCVManager / Helper(5999): 试图加载库 /data/data/org.opencv.engine/lib/libopencv_java.so 12-22 15:33:08.271: D / dalvikvm(5999):试图加载lib /data/data/org.opencv.engine/lib/libopencv_java.so 0x41936a40 12-22
15:33:08.271:D / dalvikvm(5999):共享库 ' /data/data/org.opencv.engine/lib/libopencv_java.so'已装入 相同的CL 0x41936a40 12-22 15:33:08.271:D / OpenCVManager / Helper(5999): OpenCV libs init还可以! 12-22 15:33:08.271: D / OpenCVManager / Helper(5999):首次尝试加载库是正常的
12-22 15:33:08.271:D / OpenCVManager / Helper(5999):初始化状态为0 12-22 15:33:08.271:D / OpenCVManager / Helper(5999):取消绑定服务 12-22 15:33:08.271:D / OpenCVManager / Helper(5999):使用回调调用 12-22 15:33:08.271:I / CartoonifierApp(5999):OpenCV加载成功 12-22 15:33:08.279:D / dalvikvm(5999):尝试加载lib /data/data/com.Cartoonifier/lib/libcartoonifier.so 0x41936a40 12-22 15:33:08.279:D / dalvikvm(5999):共享lib' /data/data/com.Cartoonifier/lib/libcartoonifier.so'已加载到相同的CL 0x41936a40 12-22 15:33:08.302:I / Cartoonifier :: SurfaceView(5999):surfaceCreated 12-22 15:33:08.302:I / Cartoonifier :: SurfaceView(5999):surfaceChanged()。窗口大小:1196x670 12-22 15:33:08.302:I / Cartoonifier :: SurfaceView(5999):setupCamera(1196x670) 12-22 15:33:08.302:I / Cartoonifier :: SurfaceView(5999):开始处理线程 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率1920x1080 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):发现相机分辨率1280x720 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):发现相机分辨率960x720 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率800x480 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率720x576 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率720x480 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):发现相机分辨率768x576 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率640x480 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率320x240 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率352x288 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率240x160 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率176x144 12-22 15:33:08.310:I / Cartoonifier :: SurfaceView(5999):找到相机分辨率128x96 12-22 15:33:08.318:I / Cartoonifier :: SurfaceView(5999):选择相机预览尺寸:1280x720 12-22 15:33:08.333:D / dalvikvm(5999):GC_FOR_ALLOC释放131K,2%释放10807K / 11011K,暂停13ms,总计13ms
12-22 15:33:08.333:I / dalvikvm-heap(5999):将堆(frag case)增长到11.902MB,用于1382416字节分配
12-22 15:33:08.357:D / dalvikvm(5999):GC_CONCURRENT释放1K,3%免费12156K / 12423K,暂停12ms + 1ms,总计24ms
12-22 15:33:08.357:D / dalvikvm(5999):WAIT_FOR_CONCURRENT_GC阻止了11ms
12-22 15:33:08.365:D / dalvikvm(5999):GC_FOR_ALLOC释放0K,3%免费12156K / 12423K,暂停9ms,总计9ms
12-22 15:33:08.372:I / dalvikvm-heap(5999):将堆(frag case)增长到13.219MB,用于1382416字节分配
12-22 15:33:08.388:D / dalvikvm(5999):GC_CONCURRENT释放0K,3%释放13506K / 13831K,暂停11ms + 1ms,总计21ms
12-22 15:33:08.388:D / dalvikvm(5999):WAIT_FOR_CONCURRENT_GC阻止了7ms
12-22 15:33:08.404:D / dalvikvm(5999):GC_FOR_ALLOC释放< 1K,3%free 13506K / 13831K,暂停9ms,总计10ms
12-22 15:33:08.411:I / dalvikvm-heap(5999):将堆(frag case)增长到16.735MB进行3686416字节分配
12-22 15:33:08.427:D / dalvikvm(5999):GC_CONCURRENT释放< 1K,3%free 17106K / 17479K,暂停12ms + 1ms,总共22ms
12-22 15:33:08.427:D / dalvikvm(5999):WAIT_FOR_CONCURRENT_GC阻止了10ms
12-22 15:33:08.443:D / dalvikvm(5999):GC_FOR_ALLOC释放< 1K,3%free 17106K / 17479K,暂停10ms,总计10ms
12-22 15:33:08.450:I / dalvikvm-heap(5999):将堆(frag case)增长到20.250MB进行3686416字节分配
12-22 15:33:08.466:D / dalvikvm(5999):GC_CONCURRENT释放0K,2%释放20706K / 21127K,暂停12ms + 2ms,总计22ms
12-22 15:33:08.466:D / dalvikvm(5999):WAIT_FOR_CONCURRENT_GC阻止了5ms
12-22 15:33:08.466:I / Cartoonifier :: SurfaceView(5999):开始预览
12-22 15:33:08.497:E / BufferQueue(5999):[unnamed-5999-0] setBufferCount:SurfaceTexture已被放弃!
12-22 15:33:08.505:E / Cartoonifier :: SurfaceView(5999):mCamera.startPreview()失败
来自CartoonifierApp.java的片段显示我的修改
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
// Load native library after(!) OpenCV initialization
System.loadLibrary("cartoonifier");
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
Log.i(TAG, "Trying to load OpenCV library");
if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback))
{
Log.e(TAG, "Cannot connect to OpenCV Manager");
}
requestWindowFeature(Window.FEATURE_NO_TITLE);
mView = new CartoonifierView(this);
setContentView(mView);
// Call our "onTouch()" callback function whenever the user touches the screen.
mView.setOnTouchListener(this);
}
@Override
protected void onPause() {
Log.i(TAG, "onPause");
super.onPause();
mView.releaseCamera();
}
@Override
public void onResume()
{
super.onResume();
Log.i(TAG, "onResume");
if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback))
{
Log.e(TAG, "Cannot connect to OpenCV Manager");
}
if( !mView.openCamera() ) {
AlertDialog ad = new AlertDialog.Builder(this).create();
ad.setCancelable(false); // This blocks the 'BACK' button
ad.setMessage("Fatal error: can't open camera!");
/*ad.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
}); */
ad.show();
}
}
答案 0 :(得分:9)
此问题在前一段时间在OpenCV中得到了解决。
不确定是应用程序还是操作系统错误。问题是调用用于可视化的Bitmap.createBitmap
分离SurfaceTexture
对象。
解决方法是修改基础View
类的setupCamera方法并更改
try {
setPreview();
} catch (IOException e) {
Log.e(TAG, "mCamera.setPreviewDisplay/setPreviewTexture fails: " + e);
}
/* Notify that the preview is about to be started and deliver preview size */
onPreviewStarted(params.getPreviewSize().width, params.getPreviewSize().height);
到
/* Notify that the preview is about to be started and deliver preview size */
onPreviewStarted(params.getPreviewSize().width, params.getPreviewSize().height);
try {
setPreview();
} catch (IOException e) {
Log.e(TAG, "mCamera.setPreviewDisplay/setPreviewTexture fails: " + e);
}
(行的顺序改变)